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8037753 |
System for manufacturing a modularly structured apparatus for determining filling level
A system for providing different versions of a modularly structured apparatus for determining a physical process quantity, wherein at least two devices to be generated from the system are based on...
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7966878 |
Method for measuring liquid cryogen level using a level probe
A method of measuring a level of liquid cryogen, comprising the steps of immersing a liquid cryogen level probe in a liquid cryogen, applying a propagation current to the heater (26) to induce...
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7959863 |
Liquid state detecting sensor
A liquid state detecting sensor for detecting a state of a liquid including a liquid concentration detecting element, a holder member, and an enclosing member as defined herein, wherein the holder...
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7930937 |
Detection device making it possible to measure the quantity of hot water remaining in a storage reservoir
The detection device for measuring the quantity of hot water remaining inside a storage reservoir and more particularly inside a tank (2) of a water heater (3, 30), comprises a capillary tube (10)...
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7926345 |
Apparatus for measuring a filling level
An apparatus for measuring the filling level in a liquid vessel, in particular in a reactor vessel of a nuclear-engineering plant, with a plurality of elongate, spaced-apart measurement tubes. Each...
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7900510 |
Marine trolling sensor
A method and apparatus to implement a trolling device. The trolling device can assist maritime sports fishermen in defining the actual water depth and/or water temperature of the location at which...
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7841235 |
Superconductive level indicator for liquid hydrogen and liquid neon, and measuring method for liquid level measurement
The invention relates to a superconducting level measuring apparatus for liquid hydrogen in liquid hydrogen vessels, in particular vehicular tanks, a superconductor (1) based on magnesium diboride...
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7836761 |
Immersion thermowell for temperature and water level sensing
An immersion thermowell with an electrically isolated sensor tube allows for ready conduction of heat energy to a temperature sensor probe. An electrical signal originating on the fluid container...
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7828960 |
F.O.G. separator control
A separator for separating F.O.G. from an effluent that contains F.O.G. includes a tank, an inlet to the tank for receiving effluent that contains F.O.G., and an outlet to allow grey water to leave...
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7714586 |
Control unit and control device comprising the control unit
A control device includes a control unit and an evaluation unit that is configured to generate a control signal by which the control unit is impinged upon. The control unit is provided with a...
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7712363 |
Liquid state detecting sensor
A liquid state detecting sensor is provided in which a level detecting unit for detecting the level of a liquid and a concentration detecting unit for detecting the concentration of a particular...
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7698939 |
Thermistor-based fuel sensor
A system for sensing a fuel level includes sensors that sense the fuel level and a voltage source that applies a constant voltage to the sensors for a predetermined time. The system includes a...
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7650759 |
Apparatus for controlling refrigerant level
An apparatus for controlling a refrigerant level comprises a first detecting unit installed at a lower side of the inside of a refrigerant tank, for detecting whether a refrigerant stored at a...
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7596998 |
Liquid level sensor using thick film substrate
In many applications, where the level of a liquid needs to be monitored (and possibly controlled), it is not necessary to provide a continuous (analog) liquid level signal, but limit sensing to one...
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7568894 |
Hermetic compressor
A hermetic compressor includes a housing which accommodates a motor and a compressing mechanism, an oil surface sensor mounted to a side wall of the housing, and refrigerating machine oil. The oil...
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7523661 |
Methods and systems for liquid volumetric measurement
An apparatus for measuring a volume of liquid within a vessel is described. The apparatus includes a plurality of devices each having electrical properties that are dependent on a temperature of...
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7472594 |
Fluid level indication system and technique
A technique that is usable with a well includes disposing a distributed temperature sensor in a conduit that traverses a region of the well. The region contains at least two different well fluid...
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7470060 |
Detection apparatus for measuring fluid in a vessel
A detection apparatus for measuring fluid in a vessel, comprising: at least one processor for receiving, processing and storing data from sensors in the vessel, at least one vertical support...
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7418788 |
Temperature sensitive dipstick
A fluid level indicator for determining the level of fluid in a container includes a dipstick that is entered into the fluid in the container and withdrawn from the fluid, a billet of thermochromic...
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7401625 |
System for supplying liquefied gas to a combustion engine with a minimum liquefied-gas level detector
To detect the volume of gas remaining in a gas bottle or a fixed tank of a system for supplying liquefied gas as fuel for a combustion engine, a positive temperature coefficient (or PTC) probe (16)...
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7392691 |
Method and apparatus for detecting the level of a liquid
A system for determining the position of a gas/liquid interface of a fluid in a tank having a probe and a controller. The probe has silicon diodes arranged linearly on a substrate. The controller...
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7302846 |
Temperature-sensing device for determining the level of a fluid
The present invention deals with determining the level of fluid in a container. Typically, a beverage container containing a liquid will absorb heat energy from the surrounding environment at a...
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7287426 |
Liquid level indicators
A liquid level indicator, suitable for determining the level of a volatile liquid within a container, includes temperature sensors spaced vertically apart from each other. A processor processes the...
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7275429 |
Mechanical self-cleaning probe via bi-metallic or shape memory
A conductance probe is provided for adapting in a device having a container for holding a fluid therein. The a conductance probe is installed therein for providing a conductance signal indicating...
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7258483 |
Device for measuring the level and/or the temperature in a container
A device for measuring at least one of a level and a temperature of a liquid in a container includes a resistor arrangement adapted to be immersed in the liquid. An immersed length of the resistor...
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7181965 |
Self-heated liquid level sensor
A liquid level sensor comprising a thermistor probe and a power source connected to the thermistor probe to heat the thermistor probe. A cover encases the thermistor probe and includes openings...
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7146854 |
Methods and apparatus for media level measurement
Representative embodiments provide for a media level measurement apparatus, including a sensor to provide an ambient temperature signal, a controller, and a source configured to provide an...
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7073404 |
Method and device for detecting accumulations of solid material
A method and device for detecting an accumulation of a solid material in a vessel that contains at least one fluid phase. The device includes an electric conductor element that is positioned in a...
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7062965 |
Resistive level sensor for cryo-liquid gas tanks
The present invention provides a probe having a resistance that varies with temperature and is operable to determine the quantity of a fluid, such as hydrogen, in a storage tank, such as a...
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7043967 |
Sensor device for monitoring the condition of a fluid and a method of using the same
The present invention is a compact apparatus and method that provides an efficient manner for monitoring the condition and level of a functional fluid directly in operating equipment. A sensor...
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7040161 |
Parts washer with improved temperature and pump control
A parts washer including a receptacle positioned on a reservoir for cleaning liquid having a drain opening and a module which engages a portion of the reservoir in the cleaning liquid for adjusting...
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7000466 |
Oil flow sensing
An electrical current is passed through a thermistor to raise its temperature above the temperature of oil flowing in pulses past the thermistor. A change is measured in the temperature of the...
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6990861 |
Stratified hot water heated depth display system
A vertical series of electrical heat sensors adhered to the outer surface of a water heater tank. The sensors are electrically connected to a corresponding vertical series of display lights in...
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6973828 |
Liquid level sensor
An improved liquid level sensor is disclosed which provides a reliable and simple device for accurately determining the level of a liquid within a vessel. The sensor utilizes a plurality of...
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6959599 |
Level detector for storage tanks for fluids
A level detector for storage tanks for fluids comprises a microprocessor, a network of resistive elements connected in series or parallel, and a plurality of conductive elements between them,...
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6948364 |
Apparatus for detecting the internal liquid level in a vessel
The liquid level detector system of the present invention comprises a heater thermally coupled to the interior of the vessel. A linear sensor, having a vertical longitudinal axis, is located in...
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6908226 |
Method and apparatus for aspirating liquid from a container
A method and apparatus for aspirating a liquid (e.g., blood) from a container uses an electrically biased thermistor element, mounted proximate the tip of a liquid-aspirating probe, to determine...
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6880396 |
Level indicator having thermochromic leucodye inks
A level indicator and method is provided which is intimately affixed to the outside surface of the outside wall of a container, for use in the determination of the level of the interface between a...
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6779398 |
Ullage meter for a tank of compressed gas at elevated temperature
A method of gas tank ullage indication is designed to be made up of a coating or film attached to the surface of a tank for holding compressed gas. This is used normally when the tank is warm as is...
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6776037 |
Microprocessor-based liquid sensor and ice detector
Apparatus and a method of operating any structural configuration of a heater and array of temperature sensors to measure with high accuracy, the level of stratified liquids like water and oil or...
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6761066 |
Level indicator
A level indicator and method is provided which is intimately affixed to the outside surface of the outside wall of a container, for use in the determination of the level of the interface between a...
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6719210 |
Color changing sprayer container
A sprayer including a sprayer container adapted to be filled with a fluid. The sprayer container has at least a portion thereof including thermochromic color-changing properties. The sprayer...
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6705162 |
Probe assembly for monitoring the water level in electric resistor boilers
A probe assembly for monitoring the water level in boilers with an electric immersion resistor heater, of the type that comprises at least one sensor element to be arranged inside a hollow body...
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6662429 |
Device for measuring the filling level in a container using thermoelements
In a device for measuring the filling level, thermoelements (20) are used which are disposed on a sheet-shaped support (25). The thermoelements (20) consist of two different materials and are...
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6662650 |
Method and apparatus for detecting a dry/wet state of a dual exposed thermistor bead liquid level sensor
A method of detecting a dry/wet state of a dual thermistor bead sensor over a wide operating temperature range comprises the steps of: conducting first and second predetermined currents through one...
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6662122 |
Method for the controlled proportioning of liquids while dislocating a gas cushion
A method for controlled proportioning of liguids with a postive-displacement device (2) for dislocating a gas cushion (17) includes measuring the pressure (pab) in the gas cushion (17) at the time...
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6622993 |
Humidifier including output efficiency and liquid level indicators
A humidifier including a reservoir adapted for retaining liquid and an evaporative media supported in adsorbing contact with the liquid. A reservoir temperature sensor detects a temperature within...
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6615658 |
Method and apparatus for detecting the internal liquid level in a vessel
A system for detecting the level of a liquid in a vessel, comprises a detector assembly including a thermally conductive substrate supported within the vessel. One or more heaters are mounted on...
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6612169 |
Apparatus for engine lubricant level detection
The invention relates to an indicator system for fluid levels, including two or more optically and/or thermally conducting fibers, preferably suitable for indicating the fluid level of a lubricant...
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6578415 |
Limit-level sensor and method of determining the undershooting or overshooting of an intended level of liquid in a container
A limit-level sensor for measuring level of a liquid has a resistance element which has an electric resistance which suddenly varies a transition temperature which lies above the maximum liquid...
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